Campbell Biology Custom Stony Brook 10 Th Edition
Campbell Biology Custom Stony Brook 10 Th Edition
10th Edition
ISBN: 9781269870818
Author: Reece Urry Cain Wasserman Minorsky Jackson
Publisher: PEARSON
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Chapter 35.3, Problem 3CC
Summary Introduction

To determine: How root hairs and microvilli are analogous structures.

Concept introduction:

Analogous structures are those structures that perform the same function but are unrelated to each other. The analogous structure arises due to the convergent evolution.

Root hairs are extensions of the root epidermis, present predominantly on the growing roots of the plant. They are basically modified epidermal cells. They mainly function in water and minerals absorption from the soil. Root hairs have very short life span, but constitute about 90 percent of the total surface area of the roots.

Microvilli are finger like projections present in the small intestine of humans and other animals. They greatly increase the total surface area for absorption of the nutrients. Hence, they share similarities with root hairs of plants.

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EXPERIMENT: INITIATION OF CALLUS AND CELL SUSPENSION IN SELECTED PLANTS Please make a general introduction paragraph about this experiment.
Lab 6- Vascular Plant Structures What are the 4 main tissue types discussed (from the outline on p.127) Know this terminology if asked to locate/identify the following: vascular cylinder, vascular bundle, ground tissue, epidermis, palisade mesophyll, spongy mesophyll, guard cells, stoma, xylem, phloem. Can you determine if a plant is a monocot or dicot just by looking at the pattern of the roots? The pattern of the veins in the leaf? The pattern of the vascular bundles in the stem?
Explain the difference between symplast and transmembrane water transport pathways in plants. (i) (ii) Explain positive hydrostatic pressure in the root and conditions causing the root pressure. What is the phenomenon likely caused by this root pressure? (iii) Describe the phenomenon observed in Question 1 c) (ii) with inclusion of plant structures involved.
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